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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2012

Probing ultrafast thermalization with field-free molecular alignment

Résumé

The rotation-translation thermalization of CO2 gas is investigated 500 ps after its preheating by a nonresonant short and intense laser pulse. The temperature of thermalization is optically determined with two additional short laser pulses enabling a field-free molecular alignment process and its probing, respectively. The measurements are performed for various intensities of the preheat pulse, leading to the observation of different temperatures which are in very good agreement with classical molecular dynamics simulations. The results can be regarded as a step towards real-time tracking of ultrafast relaxation pathways in molecular motion.
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Dates et versions

hal-00750053 , version 1 (07-12-2012)

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Julien Houzet, Julien Gateau, Edouard Hertz, Franck Billard, Bruno Lavorel, et al.. Probing ultrafast thermalization with field-free molecular alignment. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2012, 86, pp.033419. ⟨10.1103/PhysRevA.86.033419⟩. ⟨hal-00750053⟩
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